Puff €˜n€™ Stuff Services is a small company that assembles mailings for clients in the Atlanta area. Different-size envelopes are stuffed with various items such as coupons, advertisements, political messages, and so on, by a staff of workers, who are paid on a piece-rate basis. A time study of a job has been conducted by an engineering consulting firm using a subject stuffing manila envelopes. The observations from the time study for 10 cycles of the five-element job and the performance rating for each element are as follows.

a. Using an allowance factor of 10%, compute the standard time for this job.
b. If the firm pays workers a piece rate of $0.03 per envelope for this job, what would the average worker make per hour and what would the subject of the study make perhour?

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Elemental Times (min) Element 1 2 3 5 6 7 8 9 10 RF 1 0.09 0.10 0.12 0.09 0.08 0.07 0.09 0.06 0.10 009 1.10 2 0.08 0.09 0.08 0.07 0.10 010 0.08 0.06 0.11 0.09 0.95 3 0.15 0.13 0.14 0.16 0.12 015 0.16 0.15 0.15 0.14 0.90 4 0.10 0.09 0.09 0.08 0.11 0.08 0.09 0.10 0.10 0.09 1.00 5 0.06 0.05 0.09 0.06 007 0.05 0.08 0.05 0.09 007 0.95